Wanhua Chemical Group Co., Ltd. Announcement of the Results for the Issuance of the Fifth Green Technology Innovation Bonds in 2026

Securities Code: 600309 Securities Abbreviation: Wanhua Chemical Announcement Number: Lin 2026-15

Wanhua Chemical Group Co., Ltd.

Announcement of the Issuance Results of the Fifth Phase of Green Technology Innovation Bonds for 2026

The Board of Directors of our company and all directors guarantee that the content of this announcement does not contain any false records, misleading statements, or major omissions, and bear individual and joint responsibility for the authenticity, accuracy, and completeness of its content.

Wanhua Chemical Group Co., Ltd. (hereinafter referred to as “the Company”) approved the “Proposal for the Application for Continued Registration of Non-Financial Corporate Debt Financing Instruments (DFI) upon Maturity” at the first meeting of the ninth Board of Directors held on April 12, 2025, which was voted and approved at the 2024 Annual General Meeting of Shareholders held on May 15, 2025. The Company agreed to apply to the National Association of Financial Market Institutional Investors for continued registration of non-financial corporate debt financing instruments (DFI) upon maturity and to issue ultra-short-term financing bonds, short-term financing bonds, medium-term notes, perpetual notes, asset-backed notes, green debt financing instruments, and other products in the domestic market of China.

On June 24, 2025, the Company received the “Notice of Acceptance of Registration” (Zhong Shi Xie Zhu [2025] DFI36) issued by the National Association of Financial Market Institutional Investors, which accepted the registration of the Company’s debt financing instruments. The registration is valid for 2 years from the date of the notice and allows for the issuance of ultra-short-term financing bonds, short-term financing bonds, medium-term notes, perpetual notes, asset-backed notes, green debt financing instruments, and other products during the validity period.

Based on its funding plan and the conditions in the interbank market, the Company issued the fifth phase of green technology innovation bonds for 2026 in the national interbank market on March 25, 2026, and the raised funds were received on March 26, 2026. The issuance results are as follows:

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For relevant documents regarding this bond issuance, please refer to the China Money Network (www.chinamoney.com.cn) and the Shanghai Clearing House website (www.shclearing.com.cn).

This announcement is hereby made.

Wanhua Chemical Group Co., Ltd.

March 27, 2026

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